Jack.



F. HAIZMANN.

JACK.

APPLICATION TILED JULY 17, 1913.

Patented Mar. 16, 1915. if 92 2 SHEETS-SHEET'L JACK.

Specification of Letters .Pate nt.

Patented Mar. 16, 1915.

Application filed July 17, 1913. Serial No. 779,529.

To all whom it may concern Be it known. that I, FRIEDRI H HAIZ- MANN, a citizen of the German Empire, residing at Stuttgart, in the Kingdom of \Vurttemberg, Empire of Germany, have invented certain new and useful Improvements in Jacks; and I. do hereby declare the following to be a' ful1,'clear, and exact description of the invention, suchas will enable others skilled in the art to which it appertains to make and use the same.

For wheels of motor-cars, jacks are employed which are adapted to meet the requirements of axles which are at varying heights from the ground by a removable extension piece being placed on the lifting bar.v In the ordinary acks of this kind the disadvantage has been experienced that the extension piece forms an independent part.-

Now by the present inventionthis disadvantage and others resulting therefrom are avoided by the extension piece being permanently connected with the lifting appliance in such a way that the connecting memberalso serves as a stiffener or stay for the lifting bar. In this way even when the lif ing bar is drawn far out of its guides, it is stiffened and prevented from bending. Forthis object this connecting member consists of a rod which, on the one hand, serves as a hinge-pin for the extension piece which can be turned on the rod, and also as a guide for the lifting bar. For this latter purpose the rod is mounted so as to be slidable in eyes on the frame of the jack.

One form of construction of this invention will now be described as an example with reference to the accompanying drawings, in which Figure 1 1s a view of the jack as a whole with the extension piece turned aside; Figs. 2 and 3 are a side view and plan viewrespectively of Fig. 1; Fig. 4: is a plan view of the extension turned aside; and Fig. '5 is a view of the jack in its highest position.

On the frame of the ordinary jack a an extension piece 6 is so arranged on the lifting bar f that it can be turned aside. For

lifting the axles of the front and rear this object itis mounted in such a way as to be pivotal on a. vertical rod cby means of which the extension piece 12 can be turned on the socket d when not in use. 'The rod 0 passes through lugs oreyes e in the jack frame in such a way thatthese eyesact to guide the rod vc when the lifting bar- 7 is raised. .Thislifting may bedone in any.

UNITED suitable way,- for example by meansof a a worm g and worm-wheel h after claws *5 have been engaged beneath the axle of the car. If an axle which lies lower is to be raised, the extension piece 1s turned aside.

In order to give the .extenslon .piece a good seat on the lifting bar I, it is provided with a recess m, which, rests on suitable points n, as illustrated in dotted lines in Fig. 1.

I claim I 1. Ina jack, the combination of a lifting part; anextension adapted to rest thereon; and vertically movable means holding said extension in vertical position and constrain- Y ing it when in use to move vertically."

In ajack, the combination of a lifting 'part; .a vertically movable, vertically disposed rotatable rod disposed at distance from the lifting part and an extension off-set, i I from the rod and adapted to rest upon or to be moved away from the lifting part. 3. In a jack, the combination of a'frame;

raising the bar; a vertical movable rod spaced from said bar and rotatable on its vertical axis; and an extension piece mounted on theupper end of said'rod, ofi-set therefrom and adapted to be moved over and to rest upon the upper end of the bar, and'to be revolved uponthe vertical axis of said rod to a position entirely away from the bar.

4:. In a jack, the combination of a frame; a vertically movable, vertically disposed bar in said frame; means for raising said bar; a pair of perforated lugs on said frame in vertical alinement a distance from said bar;

said lugs; a vertically piece mounted on the upper end. of said '80 a vertically disposed bar therein; means for rod, off-set therefrom, and adapted to be sion in vertical position and constraining it moved over and to rest upon the top of said when in use to move vertically. 10 bar, and to be revolved upon the axis of said In testimony whereof I affix my signarod to a position entirely away from the ture, in presence of two Witnesses.

5 bar. FRIEDRICH HAIZIIIANN,

5. In a jack, the combination of a lifting Witnesses: part; an extension; and a rotatable and ver- GEORG HANSELMANN,

tically slidable means holding said exten- FRIDA KLAlBER. 

